But overall, the current Zhongshan mold steel market still lags behind the needs of mold industrial development. According mold experts QRO-90, a considerable part of the requirements of high mold steel need to go through the vacuum refining and remelting to ensure high purity steel, high density, higher anisotropy, which is generally more than the quality of the steel mold high quality mold steel sheet less QRO-90, while the steel mold by remelting share is small. Zhongshan die steel market is about 80 percent black round bar, currently QRO-90 tool steel, alloy tool steel production in China has been in the world, of which about 100,000 tons alloy tool steel. For eutectoid steel and steel castings and forgings hypereutectoid, or tools, dies, ball bearing steel pearlite, carbide ball, refine the organization, eliminate stress, reduce hardness, improved ductility, toughness. Heated to 20-30 degrees Celsius above Ac1 annealing, Ac1 20-30 degrees Celsius above the ball. Heating holding time and fully annealed same. QRO-90 price when cooled at a rate of 20-30 degrees Celsius per hour, cooled to the temperature of the ball, the ball after cooling to 450-500 degrees Celsius oven baked. With various domestic operating costs increased year by year, the steel infrastructure ideas also tend to go out, Southeast Asia, such as Indonesia, Myanmar, Vietnam is becoming a popular investment treasure. Indonesia, which is due to make policies to attract a large number of domestic manufacturers to invest settled, but factors such as political instability in Indonesia this year, firmly implement the ban on mining, investors wait and see situation in subsequent indecisive, the actual start start building or less. Technological backwardness easily found, poorly managed easily overlooked. Domestic enterprises have adopted over the last part of the mold workshop-style management model, truly modern enterprise management, not more. Currently mold manufacturer uneven conditions seriously affected the accuracy and quality of the mold. Zhuhai such as precision mold steel heat treatment areas, different mold materials, mold making homemade quality in appearance and service life difficult match with foreign products. Zhuhai steel mold-made molds are many and abroad using special mold materials used, their mechanical properties, wear resistance, corrosion resistance and superior brightness polishing. Chinese standard GB / T1299-2000 "alloy tool steel" provides annealed condition of the steel, for different grades of hardness value should be less than a certain value, or within a range of hardness, such as: hardness hardness 197-241HBW 217-269HBWCr5Mo1V hardness ≤255HBW. Depending on the sample quenched hardness grades, generally between 53-64HRC. Construction steel market prices in order to stabilize the main southern construction steel prices steady rise; plate market prices basically stable; hot rolled coil prices to stabilize the main; cold-rolled coil prices steady fall; Tudu coil market prices basically stable. National Development and Reform Commission deputy director of the National Energy Bureau Wu-hsiung said the 9th, to promote the development of coal-fired energy saving and emission reduction upgrading and transformation, Energy Bureau scientific power development plan, reasonably determine the annual thermal power construction scale and guide local optimization of thermal power project layout on the low utilization hours of thermal power (4500 hours or less) areas, to strictly control its thermal power construction scale year. QRO-90 manufacturers, Yong Wei mold steel, Qianjiang QRO-90 provided by the Dongguan City An Yongwei steel mold shop. "Die steel, DC53, SKD11.SUS440C, SUS420" preferred Dongguan City An Yongwei steel mold shop (2), the company is located at: 3 A, Dongguan City Changan Ha Kong, the first industrial zone, over the years, Yong Wei mold steel stick providing customers with the best quality service, contact: Simon / R. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Yong Wei mold steel expect to be your long term partner!